Joby: Why is that I eat 2000 calories per day, and I don't exercise, but yet I don't balloon up?
Me: Because just by living, you expend 2000 calories each day.
Me: Yeah. See, a pound is 3500 calories. So let's say you do the elliptical machine for 20 minutes each day and burn 100 calories. Then after 35 days, you would lose one pound.
Joby: I am never exercising again.